A device has a content processing component operable in a content processing state, and a content transducer configured to provide augmented reality data to a user of the device based on an output of the content processing component. The device has a receiver operable to receive captured data indicative of a health condition of a user of the device. The device has a processor configured to process the captured data to identify a trigger indicative of a possible change in the health condition of a user, and in response to the trigger, modify the content processing state of the content processing component such that at least one characteristic of the augmented reality data is modified.